A Development Process for Web Geographic Information System - A Case of Study.

A clock for educational purposes comprising a minute hand and an hour hand, both rotatably mounted at the center of the clockface, openings formed in the clockface at locations where the hours and minutes are indicated, and rotating members rotatably supported in the clock and each marked on its face with an hour indicating figure and a minute indicating figure. The surface of each rotating member is partially exposed through respective ones of the openings, and an arm is provided to rotate with the minute hand so as to individually turn the rotating members.